Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - IRQ bypass support for vdpa and IFC

 - MLX5 vdpa driver

 - Endianness fixes for virtio drivers

 - Misc other fixes

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (71 commits)
  vdpa/mlx5: fix up endian-ness for mtu
  vdpa: Fix pointer math bug in vdpasim_get_config()
  vdpa/mlx5: Fix pointer math in mlx5_vdpa_get_config()
  vdpa/mlx5: fix memory allocation failure checks
  vdpa/mlx5: Fix uninitialised variable in core/mr.c
  vdpa_sim: init iommu lock
  virtio_config: fix up warnings on parisc
  vdpa/mlx5: Add VDPA driver for supported mlx5 devices
  vdpa/mlx5: Add shared memory registration code
  vdpa/mlx5: Add support library for mlx5 VDPA implementation
  vdpa/mlx5: Add hardware descriptive header file
  vdpa: Modify get_vq_state() to return error code
  net/vdpa: Use struct for set/get vq state
  vdpa: remove hard coded virtq num
  vdpasim: support batch updating
  vhost-vdpa: support IOTLB batching hints
  vhost-vdpa: support get/set backend features
  vhost: generialize backend features setting/getting
  vhost-vdpa: refine ioctl pre-processing
  vDPA: dont change vq irq after DRIVER_OK
  ...

16 files changed, 100 insertions, 83 deletions

diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index 0c2349612e77..75232185324a 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -91,6 +91,8 @@
 
 /* Use message type V2 */
 #define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1
+/* IOTLB can accept batching hints */
+#define VHOST_BACKEND_F_IOTLB_BATCH  0x2
 
 #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
 #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)
diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h
index 669457ce5c48..9a269a88a6ff 100644
--- a/include/uapi/linux/vhost_types.h
+++ b/include/uapi/linux/vhost_types.h
@@ -60,6 +60,17 @@ struct vhost_iotlb_msg {
 #define VHOST_IOTLB_UPDATE         2
 #define VHOST_IOTLB_INVALIDATE     3
 #define VHOST_IOTLB_ACCESS_FAIL    4
+/*
+ * VHOST_IOTLB_BATCH_BEGIN and VHOST_IOTLB_BATCH_END allow modifying
+ * multiple mappings in one go: beginning with
+ * VHOST_IOTLB_BATCH_BEGIN, followed by any number of
+ * VHOST_IOTLB_UPDATE messages, and ending with VHOST_IOTLB_BATCH_END.
+ * When one of these two values is used as the message type, the rest
+ * of the fields in the message are ignored. There's no guarantee that
+ * these changes take place automatically in the device.
+ */
+#define VHOST_IOTLB_BATCH_BEGIN    5
+#define VHOST_IOTLB_BATCH_END      6
 	__u8 type;
 };
 
diff --git a/include/uapi/linux/virtio_9p.h b/include/uapi/linux/virtio_9p.h
index 277c4ad44e84..441047432258 100644
--- a/include/uapi/linux/virtio_9p.h
+++ b/include/uapi/linux/virtio_9p.h
@@ -25,7 +25,7 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE. */
-#include <linux/types.h>
+#include <linux/virtio_types.h>
 #include <linux/virtio_ids.h>
 #include <linux/virtio_config.h>
 
@@ -36,7 +36,7 @@
 
 struct virtio_9p_config {
 	/* length of the tag name */
-	__u16 tag_len;
+	__virtio16 tag_len;
 	/* non-NULL terminated tag name */
 	__u8 tag[0];
 } __attribute__((packed));
diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
index dc3e656470dd..ddaa45e723c4 100644
--- a/include/uapi/linux/virtio_balloon.h
+++ b/include/uapi/linux/virtio_balloon.h
@@ -45,20 +45,20 @@
 #define VIRTIO_BALLOON_CMD_ID_DONE	1
 struct virtio_balloon_config {
 	/* Number of pages host wants Guest to give up. */
-	__u32 num_pages;
+	__le32 num_pages;
 	/* Number of pages we've actually got in balloon. */
-	__u32 actual;
+	__le32 actual;
 	/*
 	 * Free page hint command id, readonly by guest.
 	 * Was previously named free_page_report_cmd_id so we
 	 * need to carry that name for legacy support.
 	 */
 	union {
-		__u32 free_page_hint_cmd_id;
-		__u32 free_page_report_cmd_id;	/* deprecated */
+		__le32 free_page_hint_cmd_id;
+		__le32 free_page_report_cmd_id;	/* deprecated */
 	};
 	/* Stores PAGE_POISON if page poisoning is in use */
-	__u32 poison_val;
+	__le32 poison_val;
 };
 
 #define VIRTIO_BALLOON_S_SWAP_IN  0   /* Amount of memory swapped in */
diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
index 0f99d7b49ede..d888f013d9ff 100644
--- a/include/uapi/linux/virtio_blk.h
+++ b/include/uapi/linux/virtio_blk.h
@@ -57,20 +57,20 @@
 
 struct virtio_blk_config {
 	/* The capacity (in 512-byte sectors). */
-	__u64 capacity;
+	__virtio64 capacity;
 	/* The maximum segment size (if VIRTIO_BLK_F_SIZE_MAX) */
-	__u32 size_max;
+	__virtio32 size_max;
 	/* The maximum number of segments (if VIRTIO_BLK_F_SEG_MAX) */
-	__u32 seg_max;
+	__virtio32 seg_max;
 	/* geometry of the device (if VIRTIO_BLK_F_GEOMETRY) */
 	struct virtio_blk_geometry {
-		__u16 cylinders;
+		__virtio16 cylinders;
 		__u8 heads;
 		__u8 sectors;
 	} geometry;
 
 	/* block size of device (if VIRTIO_BLK_F_BLK_SIZE) */
-	__u32 blk_size;
+	__virtio32 blk_size;
 
 	/* the next 4 entries are guarded by VIRTIO_BLK_F_TOPOLOGY  */
 	/* exponent for physical block per logical block. */
@@ -78,42 +78,42 @@ struct virtio_blk_config {
 	/* alignment offset in logical blocks. */
 	__u8 alignment_offset;
 	/* minimum I/O size without performance penalty in logical blocks. */
-	__u16 min_io_size;
+	__virtio16 min_io_size;
 	/* optimal sustained I/O size in logical blocks. */
-	__u32 opt_io_size;
+	__virtio32 opt_io_size;
 
 	/* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
 	__u8 wce;
 	__u8 unused;
 
 	/* number of vqs, only available when VIRTIO_BLK_F_MQ is set */
-	__u16 num_queues;
+	__virtio16 num_queues;
 
 	/* the next 3 entries are guarded by VIRTIO_BLK_F_DISCARD */
 	/*
 	 * The maximum discard sectors (in 512-byte sectors) for
 	 * one segment.
 	 */
-	__u32 max_discard_sectors;
+	__virtio32 max_discard_sectors;
 	/*
 	 * The maximum number of discard segments in a
 	 * discard command.
 	 */
-	__u32 max_discard_seg;
+	__virtio32 max_discard_seg;
 	/* Discard commands must be aligned to this number of sectors. */
-	__u32 discard_sector_alignment;
+	__virtio32 discard_sector_alignment;
 
 	/* the next 3 entries are guarded by VIRTIO_BLK_F_WRITE_ZEROES */
 	/*
 	 * The maximum number of write zeroes sectors (in 512-byte sectors) in
 	 * one segment.
 	 */
-	__u32 max_write_zeroes_sectors;
+	__virtio32 max_write_zeroes_sectors;
 	/*
 	 * The maximum number of segments in a write zeroes
 	 * command.
 	 */
-	__u32 max_write_zeroes_seg;
+	__virtio32 max_write_zeroes_seg;
 	/*
 	 * Set if a VIRTIO_BLK_T_WRITE_ZEROES request may result in the
 	 * deallocation of one or more of the sectors.
diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h
index ff8e7dc9d4dd..b5eda06f0d57 100644
--- a/include/uapi/linux/virtio_config.h
+++ b/include/uapi/linux/virtio_config.h
@@ -67,13 +67,17 @@
 #define VIRTIO_F_VERSION_1		32
 
 /*
- * If clear - device has the IOMMU bypass quirk feature.
- * If set - use platform tools to detect the IOMMU.
+ * If clear - device has the platform DMA (e.g. IOMMU) bypass quirk feature.
+ * If set - use platform DMA tools to access the memory.
  *
  * Note the reverse polarity (compared to most other features),
  * this is for compatibility with legacy systems.
  */
-#define VIRTIO_F_IOMMU_PLATFORM		33
+#define VIRTIO_F_ACCESS_PLATFORM	33
+#ifndef __KERNEL__
+/* Legacy name for VIRTIO_F_ACCESS_PLATFORM (for compatibility with old userspace) */
+#define VIRTIO_F_IOMMU_PLATFORM		VIRTIO_F_ACCESS_PLATFORM
+#endif /* __KERNEL__ */
 
 /* This feature indicates support for the packed virtqueue layout. */
 #define VIRTIO_F_RING_PACKED		34
diff --git a/include/uapi/linux/virtio_console.h b/include/uapi/linux/virtio_console.h
index b7fb108c9310..7e6ec2ff0560 100644
--- a/include/uapi/linux/virtio_console.h
+++ b/include/uapi/linux/virtio_console.h
@@ -45,13 +45,13 @@
 
 struct virtio_console_config {
 	/* colums of the screens */
-	__u16 cols;
+	__virtio16 cols;
 	/* rows of the screens */
-	__u16 rows;
+	__virtio16 rows;
 	/* max. number of ports this device can hold */
-	__u32 max_nr_ports;
+	__virtio32 max_nr_ports;
 	/* emergency write register */
-	__u32 emerg_wr;
+	__virtio32 emerg_wr;
 } __attribute__((packed));
 
 /*
diff --git a/include/uapi/linux/virtio_crypto.h b/include/uapi/linux/virtio_crypto.h
index 50cdc8aebfcf..a03932f10565 100644
--- a/include/uapi/linux/virtio_crypto.h
+++ b/include/uapi/linux/virtio_crypto.h
@@ -414,33 +414,33 @@ struct virtio_crypto_op_data_req {
 
 struct virtio_crypto_config {
 	/* See VIRTIO_CRYPTO_OP_* above */
-	__u32  status;
+	__le32  status;
 
 	/*
 	 * Maximum number of data queue
 	 */
-	__u32  max_dataqueues;
+	__le32  max_dataqueues;
 
 	/*
 	 * Specifies the services mask which the device support,
 	 * see VIRTIO_CRYPTO_SERVICE_* above
 	 */
-	__u32 crypto_services;
+	__le32 crypto_services;
 
 	/* Detailed algorithms mask */
-	__u32 cipher_algo_l;
-	__u32 cipher_algo_h;
-	__u32 hash_algo;
-	__u32 mac_algo_l;
-	__u32 mac_algo_h;
-	__u32 aead_algo;
+	__le32 cipher_algo_l;
+	__le32 cipher_algo_h;
+	__le32 hash_algo;
+	__le32 mac_algo_l;
+	__le32 mac_algo_h;
+	__le32 aead_algo;
 	/* Maximum length of cipher key */
-	__u32 max_cipher_key_len;
+	__le32 max_cipher_key_len;
 	/* Maximum length of authenticated key */
-	__u32 max_auth_key_len;
-	__u32 reserve;
+	__le32 max_auth_key_len;
+	__le32 reserve;
 	/* Maximum size of each crypto request's content */
-	__u64 max_size;
+	__le64 max_size;
 };
 
 struct virtio_crypto_inhdr {
diff --git a/include/uapi/linux/virtio_fs.h b/include/uapi/linux/virtio_fs.h
index b02eb2ac3d99..3056b6e9f8ce 100644
--- a/include/uapi/linux/virtio_fs.h
+++ b/include/uapi/linux/virtio_fs.h
@@ -13,7 +13,7 @@ struct virtio_fs_config {
 	__u8 tag[36];
 
 	/* Number of request queues */
-	__u32 num_request_queues;
+	__le32 num_request_queues;
 } __attribute__((packed));
 
 #endif /* _UAPI_LINUX_VIRTIO_FS_H */
diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
index 0c85914d9369..ccbd174ef321 100644
--- a/include/uapi/linux/virtio_gpu.h
+++ b/include/uapi/linux/virtio_gpu.h
@@ -320,10 +320,10 @@ struct virtio_gpu_resp_edid {
 #define VIRTIO_GPU_EVENT_DISPLAY (1 << 0)
 
 struct virtio_gpu_config {
-	__u32 events_read;
-	__u32 events_clear;
-	__u32 num_scanouts;
-	__u32 num_capsets;
+	__le32 events_read;
+	__le32 events_clear;
+	__le32 num_scanouts;
+	__le32 num_capsets;
 };
 
 /* simple formats for fbcon/X use */
diff --git a/include/uapi/linux/virtio_input.h b/include/uapi/linux/virtio_input.h
index a7fe5c8fb135..52084b1fb965 100644
--- a/include/uapi/linux/virtio_input.h
+++ b/include/uapi/linux/virtio_input.h
@@ -40,18 +40,18 @@ enum virtio_input_config_select {
 };
 
 struct virtio_input_absinfo {
-	__u32 min;
-	__u32 max;
-	__u32 fuzz;
-	__u32 flat;
-	__u32 res;
+	__le32 min;
+	__le32 max;
+	__le32 fuzz;
+	__le32 flat;
+	__le32 res;
 };
 
 struct virtio_input_devids {
-	__u16 bustype;
-	__u16 vendor;
-	__u16 product;
-	__u16 version;
+	__le16 bustype;
+	__le16 vendor;
+	__le16 product;
+	__le16 version;
 };
 
 struct virtio_input_config {
diff --git a/include/uapi/linux/virtio_iommu.h b/include/uapi/linux/virtio_iommu.h
index 48e3c29223b5..237e36a280cb 100644
--- a/include/uapi/linux/virtio_iommu.h
+++ b/include/uapi/linux/virtio_iommu.h
@@ -18,24 +18,24 @@
 #define VIRTIO_IOMMU_F_MMIO			5
 
 struct virtio_iommu_range_64 {
-	__u64					start;
-	__u64					end;
+	__le64					start;
+	__le64					end;
 };
 
 struct virtio_iommu_range_32 {
-	__u32					start;
-	__u32					end;
+	__le32					start;
+	__le32					end;
 };
 
 struct virtio_iommu_config {
 	/* Supported page sizes */
-	__u64					page_size_mask;
+	__le64					page_size_mask;
 	/* Supported IOVA range */
 	struct virtio_iommu_range_64		input_range;
 	/* Max domain ID size */
 	struct virtio_iommu_range_32		domain_range;
 	/* Probe buffer size */
-	__u32					probe_size;
+	__le32					probe_size;
 };
 
 /* Request types */
diff --git a/include/uapi/linux/virtio_mem.h b/include/uapi/linux/virtio_mem.h
index a9ffe041843c..70e01c687d5e 100644
--- a/include/uapi/linux/virtio_mem.h
+++ b/include/uapi/linux/virtio_mem.h
@@ -185,27 +185,27 @@ struct virtio_mem_resp {
 
 struct virtio_mem_config {
 	/* Block size and alignment. Cannot change. */
-	__u64 block_size;
+	__le64 block_size;
 	/* Valid with VIRTIO_MEM_F_ACPI_PXM. Cannot change. */
-	__u16 node_id;
+	__le16 node_id;
 	__u8 padding[6];
 	/* Start address of the memory region. Cannot change. */
-	__u64 addr;
+	__le64 addr;
 	/* Region size (maximum). Cannot change. */
-	__u64 region_size;
+	__le64 region_size;
 	/*
 	 * Currently usable region size. Can grow up to region_size. Can
 	 * shrink due to VIRTIO_MEM_REQ_UNPLUG_ALL (in which case no config
 	 * update will be sent).
 	 */
-	__u64 usable_region_size;
+	__le64 usable_region_size;
 	/*
 	 * Currently used size. Changes due to plug/unplug requests, but no
 	 * config updates will be sent.
 	 */
-	__u64 plugged_size;
+	__le64 plugged_size;
 	/* Requested size. New plug requests cannot exceed it. Can change. */
-	__u64 requested_size;
+	__le64 requested_size;
 };
 
 #endif /* _LINUX_VIRTIO_MEM_H */
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index 19d23e5baa4e..3f55a4215f11 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -87,19 +87,19 @@ struct virtio_net_config {
 	/* The config defining mac address (if VIRTIO_NET_F_MAC) */
 	__u8 mac[ETH_ALEN];
 	/* See VIRTIO_NET_F_STATUS and VIRTIO_NET_S_* above */
-	__u16 status;
+	__virtio16 status;
 	/* Maximum number of each of transmit and receive queues;
 	 * see VIRTIO_NET_F_MQ and VIRTIO_NET_CTRL_MQ.
 	 * Legal values are between 1 and 0x8000
 	 */
-	__u16 max_virtqueue_pairs;
+	__virtio16 max_virtqueue_pairs;
 	/* Default maximum transmit unit advice */
-	__u16 mtu;
+	__virtio16 mtu;
 	/*
 	 * speed, in units of 1Mb. All values 0 to INT_MAX are legal.
 	 * Any other value stands for unknown.
 	 */
-	__u32 speed;
+	__le32 speed;
 	/*
 	 * 0x00 - half duplex
 	 * 0x01 - full duplex
diff --git a/include/uapi/linux/virtio_pmem.h b/include/uapi/linux/virtio_pmem.h
index b022787ffb94..d676b3620383 100644
--- a/include/uapi/linux/virtio_pmem.h
+++ b/include/uapi/linux/virtio_pmem.h
@@ -15,8 +15,8 @@
 #include <linux/virtio_config.h>
 
 struct virtio_pmem_config {
-	__u64 start;
-	__u64 size;
+	__le64 start;
+	__le64 size;
 };
 
 #define VIRTIO_PMEM_REQ_TYPE_FLUSH      0
diff --git a/include/uapi/linux/virtio_scsi.h b/include/uapi/linux/virtio_scsi.h
index cc18ef8825c0..0abaae4027c0 100644
--- a/include/uapi/linux/virtio_scsi.h
+++ b/include/uapi/linux/virtio_scsi.h
@@ -103,16 +103,16 @@ struct virtio_scsi_event {
 } __attribute__((packed));
 
 struct virtio_scsi_config {
-	__u32 num_queues;
-	__u32 seg_max;
-	__u32 max_sectors;
-	__u32 cmd_per_lun;
-	__u32 event_info_size;
-	__u32 sense_size;
-	__u32 cdb_size;
-	__u16 max_channel;
-	__u16 max_target;
-	__u32 max_lun;
+	__virtio32 num_queues;
+	__virtio32 seg_max;
+	__virtio32 max_sectors;
+	__virtio32 cmd_per_lun;
+	__virtio32 event_info_size;
+	__virtio32 sense_size;
+	__virtio32 cdb_size;
+	__virtio16 max_channel;
+	__virtio16 max_target;
+	__virtio32 max_lun;
 } __attribute__((packed));
 
 /* Feature Bits */